Y2038 June 2018

y2038@lists.linaro.org

69 participants
93 discussions

[PATCH] tee: replace getnstimeofday64() with ktime_get_real_ts64()

by Arnd Bergmann

The two do the same thing, but we want to have a consistent naming in the kernel. Signed-off-by: Arnd Bergmann <arnd(a)arndb.de> --- drivers/tee/optee/rpc.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/tee/optee/rpc.c b/drivers/tee/optee/rpc.c index 41aea12e2bcc..b45c73dd37a5 100644 --- a/drivers/tee/optee/rpc.c +++ b/drivers/tee/optee/rpc.c @@ -48,7 +48,7 @@ static void handle_rpc_func_cmd_get_time(struct optee_msg_arg *arg) OPTEE_MSG_ATTR_TYPE_VALUE_OUTPUT) goto bad; - getnstimeofday64(&ts); + ktime_get_real_ts64(&ts); arg->params[0].u.value.a = ts.tv_sec; arg->params[0].u.value.b = ts.tv_nsec; -- 2.9.0

6 years, 6 months

[PATCH 1/3] powerpc: mac: fix rtc read functions

by Arnd Bergmann

As Mathieu pointed out, my conversion to time64_t was incorrect and resulted in negative times to be read from the RTC. The problem is that during the conversion from a byte array to a time64_t, the 'unsigned char' variable holding the top byte gets turned into a negative signed 32-bit integer before being assigned to the 64-bit variable for any times after 1972. This changes the logic to cast to an unsigned 32-bit number first for the Macintosh time and then convert that to the Unix time, which then gives us a time in the documented 1904..2040 year range. I decided not to use the longer 1970..2106 range that other drivers use, for consistency with the literal interpretation of the register, but that could be easily changed if we decide we want to support any Mac after 2040. Just to be on the safe side, I'm also adding a WARN_ON that will trigger if either the year 2040 has come and is observed by this driver, or we run into an RTC that got set back to a pre-1970 date for some reason (the two are indistinguishable). The same code exists in arch/m68k/ and is patched in an identical way now in a separate patch. Fixes: 5bfd643583b2 ("powerpc: use time64_t in read_persistent_clock") Reported-by: Mathieu Malaterre <malat(a)debian.org> Signed-off-by: Arnd Bergmann <arnd(a)arndb.de> --- arch/powerpc/platforms/powermac/time.c | 21 ++++++++++++++++----- 1 file changed, 16 insertions(+), 5 deletions(-) diff --git a/arch/powerpc/platforms/powermac/time.c b/arch/powerpc/platforms/powermac/time.c index 7c968e46736f..173a80630169 100644 --- a/arch/powerpc/platforms/powermac/time.c +++ b/arch/powerpc/platforms/powermac/time.c @@ -42,7 +42,11 @@ #define DBG(x...) #endif -/* Apparently the RTC stores seconds since 1 Jan 1904 */ +/* + * Offset between Unix time (1970-based) and Mac time (1904-based). Cuda and PMU + * times wrap in 2040. If we need to handle later times, the read_time functions + * need to be changed to interpret wrapped times as post-2040. + */ #define RTC_OFFSET 2082844800 /* @@ -97,8 +101,11 @@ static time64_t cuda_get_time(void) if (req.reply_len != 7) printk(KERN_ERR "cuda_get_time: got %d byte reply\n", req.reply_len); - now = (req.reply[3] << 24) + (req.reply[4] << 16) - + (req.reply[5] << 8) + req.reply[6]; + now = (u32)((req.reply[3] << 24) + (req.reply[4] << 16) + + (req.reply[5] << 8) + req.reply[6]); + /* it's either after year 2040, or the RTC has gone backwards */ + WARN_ON(now < RTC_OFFSET); + return now - RTC_OFFSET; } @@ -140,8 +147,12 @@ static time64_t pmu_get_time(void) if (req.reply_len != 4) printk(KERN_ERR "pmu_get_time: got %d byte reply from PMU\n", req.reply_len); - now = (req.reply[0] << 24) + (req.reply[1] << 16) - + (req.reply[2] << 8) + req.reply[3]; + now = (u32)((req.reply[0] << 24) + (req.reply[1] << 16) + + (req.reply[2] << 8) + req.reply[3]); + + /* it's either after year 2040, or the RTC has gone backwards */ + WARN_ON(now < RTC_OFFSET); + return now - RTC_OFFSET; } -- 2.9.0

6 years, 6 months

[PATCH net-next 1/3] xfrm: use time64_t for in-kernel timestamps

by Arnd Bergmann

The lifetime managment uses '__u64' timestamps on the user space interface, but 'unsigned long' for reading the current time in the kernel with get_seconds(). While this is probably safe beyond y2038, it will still overflow in 2106, and the get_seconds() call is deprecated because fo that. This changes the xfrm time handling to use time64_t consistently, along with reading the time using the safer ktime_get_real_seconds(). It still suffers from problems that can happen from a concurrent settimeofday() call or (to a lesser degree) a leap second update, but since the time stamps are part of the user API, there is nothing we can do to prevent that. Signed-off-by: Arnd Bergmann <arnd(a)arndb.de> --- net/xfrm/xfrm_policy.c | 24 ++++++++++++------------ net/xfrm/xfrm_state.c | 10 +++++----- 2 files changed, 17 insertions(+), 17 deletions(-) diff --git a/net/xfrm/xfrm_policy.c b/net/xfrm/xfrm_policy.c index 5f48251c1319..9f4afca8b4f5 100644 --- a/net/xfrm/xfrm_policy.c +++ b/net/xfrm/xfrm_policy.c @@ -182,8 +182,8 @@ static inline unsigned long make_jiffies(long secs) static void xfrm_policy_timer(struct timer_list *t) { struct xfrm_policy *xp = from_timer(xp, t, timer); - unsigned long now = get_seconds(); - long next = LONG_MAX; + time64_t now = ktime_get_real_seconds(); + time64_t next = TIME64_MAX; int warn = 0; int dir; @@ -195,7 +195,7 @@ static void xfrm_policy_timer(struct timer_list *t) dir = xfrm_policy_id2dir(xp->index); if (xp->lft.hard_add_expires_seconds) { - long tmo = xp->lft.hard_add_expires_seconds + + time64_t tmo = xp->lft.hard_add_expires_seconds + xp->curlft.add_time - now; if (tmo <= 0) goto expired; @@ -203,7 +203,7 @@ static void xfrm_policy_timer(struct timer_list *t) next = tmo; } if (xp->lft.hard_use_expires_seconds) { - long tmo = xp->lft.hard_use_expires_seconds + + time64_t tmo = xp->lft.hard_use_expires_seconds + (xp->curlft.use_time ? : xp->curlft.add_time) - now; if (tmo <= 0) goto expired; @@ -211,7 +211,7 @@ static void xfrm_policy_timer(struct timer_list *t) next = tmo; } if (xp->lft.soft_add_expires_seconds) { - long tmo = xp->lft.soft_add_expires_seconds + + time64_t tmo = xp->lft.soft_add_expires_seconds + xp->curlft.add_time - now; if (tmo <= 0) { warn = 1; @@ -221,7 +221,7 @@ static void xfrm_policy_timer(struct timer_list *t) next = tmo; } if (xp->lft.soft_use_expires_seconds) { - long tmo = xp->lft.soft_use_expires_seconds + + time64_t tmo = xp->lft.soft_use_expires_seconds + (xp->curlft.use_time ? : xp->curlft.add_time) - now; if (tmo <= 0) { warn = 1; @@ -233,7 +233,7 @@ static void xfrm_policy_timer(struct timer_list *t) if (warn) km_policy_expired(xp, dir, 0, 0); - if (next != LONG_MAX && + if (next != TIME64_MAX && !mod_timer(&xp->timer, jiffies + make_jiffies(next))) xfrm_pol_hold(xp); @@ -783,7 +783,7 @@ int xfrm_policy_insert(int dir, struct xfrm_policy *policy, int excl) } policy->index = delpol ? delpol->index : xfrm_gen_index(net, dir, policy->index); hlist_add_head(&policy->byidx, net->xfrm.policy_byidx+idx_hash(net, policy->index)); - policy->curlft.add_time = get_seconds(); + policy->curlft.add_time = ktime_get_real_seconds(); policy->curlft.use_time = 0; if (!mod_timer(&policy->timer, jiffies + HZ)) xfrm_pol_hold(policy); @@ -1268,7 +1268,7 @@ int xfrm_sk_policy_insert(struct sock *sk, int dir, struct xfrm_policy *pol) old_pol = rcu_dereference_protected(sk->sk_policy[dir], lockdep_is_held(&net->xfrm.xfrm_policy_lock)); if (pol) { - pol->curlft.add_time = get_seconds(); + pol->curlft.add_time = ktime_get_real_seconds(); pol->index = xfrm_gen_index(net, XFRM_POLICY_MAX+dir, 0); xfrm_sk_policy_link(pol, dir); } @@ -2234,7 +2234,7 @@ struct dst_entry *xfrm_lookup(struct net *net, struct dst_entry *dst_orig, } for (i = 0; i < num_pols; i++) - pols[i]->curlft.use_time = get_seconds(); + pols[i]->curlft.use_time = ktime_get_real_seconds(); if (num_xfrms < 0) { /* Prohibit the flow */ @@ -2446,7 +2446,7 @@ int __xfrm_policy_check(struct sock *sk, int dir, struct sk_buff *skb, return 1; } - pol->curlft.use_time = get_seconds(); + pol->curlft.use_time = ktime_get_real_seconds(); pols[0] = pol; npols++; @@ -2460,7 +2460,7 @@ int __xfrm_policy_check(struct sock *sk, int dir, struct sk_buff *skb, XFRM_INC_STATS(net, LINUX_MIB_XFRMINPOLERROR); return 0; } - pols[1]->curlft.use_time = get_seconds(); + pols[1]->curlft.use_time = ktime_get_real_seconds(); npols++; } } diff --git a/net/xfrm/xfrm_state.c b/net/xfrm/xfrm_state.c index 8308281f3253..1c2b6fdd9518 100644 --- a/net/xfrm/xfrm_state.c +++ b/net/xfrm/xfrm_state.c @@ -475,8 +475,8 @@ static enum hrtimer_restart xfrm_timer_handler(struct hrtimer *me) { struct tasklet_hrtimer *thr = container_of(me, struct tasklet_hrtimer, timer); struct xfrm_state *x = container_of(thr, struct xfrm_state, mtimer); - unsigned long now = get_seconds(); - long next = LONG_MAX; + time64_t now = ktime_get_real_seconds(); + time64_t next = TIME64_MAX; int warn = 0; int err = 0; @@ -537,7 +537,7 @@ static enum hrtimer_restart xfrm_timer_handler(struct hrtimer *me) if (warn) km_state_expired(x, 0, 0); resched: - if (next != LONG_MAX) { + if (next != TIME64_MAX) { tasklet_hrtimer_start(&x->mtimer, ktime_set(next, 0), HRTIMER_MODE_REL); } @@ -577,7 +577,7 @@ struct xfrm_state *xfrm_state_alloc(struct net *net) tasklet_hrtimer_init(&x->mtimer, xfrm_timer_handler, CLOCK_BOOTTIME, HRTIMER_MODE_ABS); timer_setup(&x->rtimer, xfrm_replay_timer_handler, 0); - x->curlft.add_time = get_seconds(); + x->curlft.add_time = ktime_get_real_seconds(); x->lft.soft_byte_limit = XFRM_INF; x->lft.soft_packet_limit = XFRM_INF; x->lft.hard_byte_limit = XFRM_INF; @@ -1571,7 +1571,7 @@ EXPORT_SYMBOL(xfrm_state_update); int xfrm_state_check_expire(struct xfrm_state *x) { if (!x->curlft.use_time) - x->curlft.use_time = get_seconds(); + x->curlft.use_time = ktime_get_real_seconds(); if (x->curlft.bytes >= x->lft.hard_byte_limit || x->curlft.packets >= x->lft.hard_packet_limit) { -- 2.9.0

6 years, 6 months

[PATCH] staging: rtl8723bs: remove get_monotonic_boottime()

by Arnd Bergmann

get_monotonic_boottime() is deprecated because it uses the old 'timespec' structure. This replaces one of the last callers with a call to ktime_get_boottime, which also simplifies it a bit by avoiding a double conversion. Signed-off-by: Arnd Bergmann <arnd(a)arndb.de> --- drivers/staging/rtl8723bs/os_dep/ioctl_cfg80211.c | 9 +-------- 1 file changed, 1 insertion(+), 8 deletions(-) diff --git a/drivers/staging/rtl8723bs/os_dep/ioctl_cfg80211.c b/drivers/staging/rtl8723bs/os_dep/ioctl_cfg80211.c index 02178e25fbb8..73fc3a742f74 100644 --- a/drivers/staging/rtl8723bs/os_dep/ioctl_cfg80211.c +++ b/drivers/staging/rtl8723bs/os_dep/ioctl_cfg80211.c @@ -233,13 +233,6 @@ static int rtw_ieee80211_channel_to_frequency(int chan, int band) return 0; /* not supported */ } -static u64 rtw_get_systime_us(void) -{ - struct timespec ts; - get_monotonic_boottime(&ts); - return ((u64)ts.tv_sec*1000000) + ts.tv_nsec / 1000; -} - #define MAX_BSSINFO_LEN 1000 struct cfg80211_bss *rtw_cfg80211_inform_bss(struct adapter *padapter, struct wlan_network *pnetwork) { @@ -331,7 +324,7 @@ struct cfg80211_bss *rtw_cfg80211_inform_bss(struct adapter *padapter, struct wl notify_channel = ieee80211_get_channel(wiphy, freq); - notify_timestamp = rtw_get_systime_us(); + notify_timestamp = ktime_to_us(ktime_get_boottime()); notify_interval = le16_to_cpu(*(__le16 *)rtw_get_beacon_interval_from_ie(pnetwork->network.IEs)); notify_capability = le16_to_cpu(*(__le16 *)rtw_get_capability_from_ie(pnetwork->network.IEs)); -- 2.9.0

6 years, 6 months

[PATCH] firewire: ohci: stop using get_seconds() for BUS_TIME

by Arnd Bergmann

The ohci driver uses the get_seconds() function to implement the 32-bit CSR_BUS_TIME register. This was added in 2010 commit a48777e03ad5 ("firewire: add CSR BUS_TIME support"). As get_seconds() returns a 32-bit value (on 32-bit architectures), it seems like a good fit for that register, but it is also deprecated because of the y2038/y2106 overflow problem, and should be replaced throughout the kernel with either ktime_get_real_seconds() or ktime_get_seconds(). I'm using the latter here, which uses monotonic time. This has the advantage of behaving better during concurrent settimeofday() updates or leap second adjustments and won't overflow a 32-bit integer, but the downside of using CLOCK_MONOTONIC instead of CLOCK_REALTIME is that the observed values are not related to external clocks. If we instead need UTC but can live with clock jumps or overflows, then we should use ktime_get_real_seconds() instead, retaining the existing behavior. Signed-off-by: Arnd Bergmann <arnd(a)arndb.de> --- drivers/firewire/ohci.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/firewire/ohci.c b/drivers/firewire/ohci.c index 45c048751f3b..5125841ea338 100644 --- a/drivers/firewire/ohci.c +++ b/drivers/firewire/ohci.c @@ -1765,7 +1765,7 @@ static u32 update_bus_time(struct fw_ohci *ohci) if (unlikely(!ohci->bus_time_running)) { reg_write(ohci, OHCI1394_IntMaskSet, OHCI1394_cycle64Seconds); - ohci->bus_time = (lower_32_bits(get_seconds()) & ~0x7f) | + ohci->bus_time = (lower_32_bits(ktime_get_seconds()) & ~0x7f) | (cycle_time_seconds & 0x40); ohci->bus_time_running = true; } -- 2.9.0

6 years, 6 months

+ sysinfo-remove-get_monotonic_boottime.patch added to -mm tree

by akpm＠linux-foundation.org

The patch titled Subject: kernel/sys.c: remove get_monotonic_boottime() has been added to the -mm tree. Its filename is sysinfo-remove-get_monotonic_boottime.patch This patch should soon appear at http://ozlabs.org/~akpm/mmots/broken-out/sysinfo-remove-get_monotonic_boott… and later at http://ozlabs.org/~akpm/mmotm/broken-out/sysinfo-remove-get_monotonic_boott… Before you just go and hit "reply", please: a) Consider who else should be cc'ed b) Prefer to cc a suitable mailing list as well c) Ideally: find the original patch on the mailing list and do a reply-to-all to that, adding suitable additional cc's *** Remember to use Documentation/process/submit-checklist.rst when testing your code *** The -mm tree is included into linux-next and is updated there every 3-4 working days ------------------------------------------------------ From: Arnd Bergmann <arnd(a)arndb.de> Subject: kernel/sys.c: remove get_monotonic_boottime() get_monotonic_boottime() is deprecated because it uses the old 'timespec' structure. This replaces one of the last callers with a call to ktime_get_boottime. Link: http://lkml.kernel.org/r/20180618150114.849216-1-arnd@arndb.de Signed-off-by: Arnd Bergmann <arnd(a)arndb.de> Reviewed-by: Cyrill Gorcunov <gorcunov(a)gmail.com> Reviewed-by: Andrew Morton <akpm(a)linux-foundation.org> Cc: Thomas Gleixner <tglx(a)linutronix.de> Cc: <y2038(a)lists.linaro.org> Cc: Dominik Brodowski <linux(a)dominikbrodowski.net> Signed-off-by: Andrew Morton <akpm(a)linux-foundation.org> --- kernel/sys.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff -puN kernel/sys.c~sysinfo-remove-get_monotonic_boottime kernel/sys.c --- a/kernel/sys.c~sysinfo-remove-get_monotonic_boottime +++ a/kernel/sys.c @@ -2523,11 +2523,11 @@ static int do_sysinfo(struct sysinfo *in { unsigned long mem_total, sav_total; unsigned int mem_unit, bitcount; - struct timespec tp; + struct timespec64 tp; memset(info, 0, sizeof(struct sysinfo)); - get_monotonic_boottime(&tp); + ktime_get_boottime_ts64(&tp); info->uptime = tp.tv_sec + (tp.tv_nsec ? 1 : 0); get_avenrun(info->loads, 0, SI_LOAD_SHIFT - FSHIFT); _ Patches currently in -mm which might be from arnd(a)arndb.de are crash-print-timestamp-using-time64_t.patch sysinfo-remove-get_monotonic_boottime.patch

6 years, 6 months

[PATCH net-next] nfp: avoid using getnstimeofday64()

by Arnd Bergmann

getnstimeofday64 is deprecated in favor of the ktime_get() family of functions. The direct replacement would be ktime_get_real_ts64(), but I'm picking the basic ktime_get() instead: - using a ktime_t simplifies the code compared to timespec64 - using monotonic time instead of real time avoids issues caused by a concurrent settimeofday() or during a leap second adjustment. Signed-off-by: Arnd Bergmann <arnd(a)arndb.de> --- drivers/net/ethernet/netronome/nfp/flower/main.h | 2 +- drivers/net/ethernet/netronome/nfp/flower/metadata.c | 12 +++++------- 2 files changed, 6 insertions(+), 8 deletions(-) diff --git a/drivers/net/ethernet/netronome/nfp/flower/main.h b/drivers/net/ethernet/netronome/nfp/flower/main.h index bbe5764d26cb..ef2114d13387 100644 --- a/drivers/net/ethernet/netronome/nfp/flower/main.h +++ b/drivers/net/ethernet/netronome/nfp/flower/main.h @@ -73,7 +73,7 @@ struct nfp_app; struct nfp_fl_mask_id { struct circ_buf mask_id_free_list; - struct timespec64 *last_used; + ktime_t *last_used; u8 init_unallocated; }; diff --git a/drivers/net/ethernet/netronome/nfp/flower/metadata.c b/drivers/net/ethernet/netronome/nfp/flower/metadata.c index 93fb809f50d1..c098730544b7 100644 --- a/drivers/net/ethernet/netronome/nfp/flower/metadata.c +++ b/drivers/net/ethernet/netronome/nfp/flower/metadata.c @@ -158,7 +158,6 @@ static int nfp_release_mask_id(struct nfp_app *app, u8 mask_id) { struct nfp_flower_priv *priv = app->priv; struct circ_buf *ring; - struct timespec64 now; ring = &priv->mask_ids.mask_id_free_list; /* Checking if buffer is full. */ @@ -169,8 +168,7 @@ static int nfp_release_mask_id(struct nfp_app *app, u8 mask_id) ring->head = (ring->head + NFP_FLOWER_MASK_ELEMENT_RS) % (NFP_FLOWER_MASK_ENTRY_RS * NFP_FLOWER_MASK_ELEMENT_RS); - getnstimeofday64(&now); - priv->mask_ids.last_used[mask_id] = now; + priv->mask_ids.last_used[mask_id] = ktime_get(); return 0; } @@ -178,7 +176,7 @@ static int nfp_release_mask_id(struct nfp_app *app, u8 mask_id) static int nfp_mask_alloc(struct nfp_app *app, u8 *mask_id) { struct nfp_flower_priv *priv = app->priv; - struct timespec64 delta, now; + ktime_t reuse_timeout; struct circ_buf *ring; u8 temp_id, freed_id; @@ -198,10 +196,10 @@ static int nfp_mask_alloc(struct nfp_app *app, u8 *mask_id) memcpy(&temp_id, &ring->buf[ring->tail], NFP_FLOWER_MASK_ELEMENT_RS); *mask_id = temp_id; - getnstimeofday64(&now); - delta = timespec64_sub(now, priv->mask_ids.last_used[*mask_id]); + reuse_timeout = ktime_add_ns(priv->mask_ids.last_used[*mask_id], + NFP_FL_MASK_REUSE_TIME_NS); - if (timespec64_to_ns(&delta) < NFP_FL_MASK_REUSE_TIME_NS) + if (ktime_before(ktime_get(), reuse_timeout)) goto err_not_found; memcpy(&ring->buf[ring->tail], &freed_id, NFP_FLOWER_MASK_ELEMENT_RS); -- 2.9.0

6 years, 6 months

Re: [Y2038] [PATCH] leds: ledtrig-activity: use ktime_get_boot_ns()

by Arnd Bergmann

On Mon, Jun 18, 2018 at 5:07 PM, Pavel Machek <pavel(a)ucw.cz> wrote: > Hi! > >> get_monotonic_boottime() is deprecated, so let's convert this to >> the simpler ktime_get_boot_ns(). >> >> Signed-off-by: Arnd Bergmann <arnd(a)arndb.de> > > Have you tested it? No, only build-tested. >> diff --git a/drivers/leds/trigger/ledtrig-activity.c b/drivers/leds/trigger/ledtrig-activity.c >> index 5081894082bd..589c1bc4d0b9 100644 >> --- a/drivers/leds/trigger/ledtrig-activity.c >> +++ b/drivers/leds/trigger/ledtrig-activity.c >> @@ -37,7 +37,6 @@ static void led_activity_function(struct timer_list *t) >> struct activity_data *activity_data = from_timer(activity_data, t, >> timer); >> struct led_classdev *led_cdev = activity_data->led_cdev; >> - struct timespec boot_time; >> unsigned int target; >> unsigned int usage; >> int delay; >> @@ -57,7 +56,7 @@ static void led_activity_function(struct timer_list *t) >> return; >> } >> >> - get_monotonic_boottime(&boot_time); >> + curr_boot = ktime_get_boot_ns(); >> >> cpus = 0; >> curr_used = 0; >> @@ -76,7 +75,6 @@ static void led_activity_function(struct timer_list *t) >> * down to 16us, ensuring we won't overflow 32-bit computations below >> * even up to 3k CPUs, while keeping divides cheap on smaller systems. >> */ >> - curr_boot = timespec_to_ns(&boot_time) * cpus; > > Original code is pretty weird (notice the * cpus), so I'm > double-checking. Ok, dropping the *cpus was not intentional, I'll repost a version that puts it that back. Thanks for pointing this out! Arnd

6 years, 6 months

[PATCH] ipmi: Change to ktime_get_ts64()

by Arnd Bergmann

getnstimeofday64() is deprecated because of the inconsistent naming, it is only a wrapper around ktime_get_real_ts64() now, which could be used as a direct replacement. However, it is generally better to use CLOCK_MONOTONIC timestamps where possible, to avoid glitches with a concurrent settimeofday() or leap second. The uses in ipmi are either for debugging prints or for comparing against a prior timestamp, so using a monotonic ktime_get_ts64() is probably best here. Signed-off-by: Arnd Bergmann <arnd(a)arndb.de> --- drivers/char/ipmi/ipmi_si_intf.c | 6 +++--- 1 file changed, 3 insertions(+), 3 deletions(-) diff --git a/drivers/char/ipmi/ipmi_si_intf.c b/drivers/char/ipmi/ipmi_si_intf.c index ad353be871bf..fb19c796f0fa 100644 --- a/drivers/char/ipmi/ipmi_si_intf.c +++ b/drivers/char/ipmi/ipmi_si_intf.c @@ -269,7 +269,7 @@ void debug_timestamp(char *msg) { struct timespec64 t; - getnstimeofday64(&t); + ktime_get_ts64(&t); pr_debug("**%s: %lld.%9.9ld\n", msg, (long long) t.tv_sec, t.tv_nsec); } #else @@ -961,12 +961,12 @@ static inline int ipmi_thread_busy_wait(enum si_sm_result smi_result, if (max_busy_us == 0 || smi_result != SI_SM_CALL_WITH_DELAY) ipmi_si_set_not_busy(busy_until); else if (!ipmi_si_is_busy(busy_until)) { - getnstimeofday64(busy_until); + ktime_get_ts64(busy_until); timespec64_add_ns(busy_until, max_busy_us*NSEC_PER_USEC); } else { struct timespec64 now; - getnstimeofday64(&now); + ktime_get_ts64(&now); if (unlikely(timespec64_compare(&now, busy_until) > 0)) { ipmi_si_set_not_busy(busy_until); return 0; -- 2.9.0

6 years, 6 months

[PATCH 1/2] amdgpu: display: use modern ktime accessors

by Arnd Bergmann

getrawmonotonic64() is deprecated because of the nonstandard naming. The replacement functions ktime_get_raw_ns() also simplifies the callers. Signed-off-by: Arnd Bergmann <arnd(a)arndb.de> --- drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_services.c | 8 -------- drivers/gpu/drm/amd/display/dc/dm_services.h | 5 ++++- 2 files changed, 4 insertions(+), 9 deletions(-) diff --git a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_services.c b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_services.c index 5a3346124a01..e861929dd981 100644 --- a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_services.c +++ b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_services.c @@ -35,14 +35,6 @@ #include "amdgpu_dm_irq.h" #include "amdgpu_pm.h" -unsigned long long dm_get_timestamp(struct dc_context *ctx) -{ - struct timespec64 time; - - getrawmonotonic64(&time); - return timespec64_to_ns(&time); -} - unsigned long long dm_get_elapse_time_in_ns(struct dc_context *ctx, unsigned long long current_time_stamp, unsigned long long last_time_stamp) diff --git a/drivers/gpu/drm/amd/display/dc/dm_services.h b/drivers/gpu/drm/amd/display/dc/dm_services.h index 4ff9b2bba178..eb5ab3978e84 100644 --- a/drivers/gpu/drm/amd/display/dc/dm_services.h +++ b/drivers/gpu/drm/amd/display/dc/dm_services.h @@ -339,7 +339,10 @@ bool dm_dmcu_set_pipe(struct dc_context *ctx, unsigned int controller_id); #define dm_log_to_buffer(buffer, size, fmt, args)\ vsnprintf(buffer, size, fmt, args) -unsigned long long dm_get_timestamp(struct dc_context *ctx); +static inline unsigned long long dm_get_timestamp(struct dc_context *ctx) +{ + return ktime_get_raw_ns(); +} unsigned long long dm_get_elapse_time_in_ns(struct dc_context *ctx, unsigned long long current_time_stamp, -- 2.9.0

6 years, 6 months

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Y2038 June 2018